<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Document</title>
    <script src="https://unpkg.com/vue@3.0.2"></script>
  </head>
  <body>
    <head>
      Hi
    </head>
    <h1>:)</h1>
    <div id="movie">
      <p>{{ title }} - {{author }} - {{ age }}</p>

      <button v-on:click="age++">Increase Age</button>
      <button v-on:click="age--">Decrease Age</button>

      <div @click="changeTitle('OathBrage')">Change book title</div>
    </div>

    <script src="app.js"></script>
  </body>
</html>
